Linotype-machine.



W. H. JOHNSON.

LINOTYPE MACHINE.

APPLICATION FILED MAY 9. 1916.

Patented Aug. 29, 1916.

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through the melting pot of a m Wt E an s LII 'l'OTYPE-MAEHINE.

application filed May 9, 1916.

lte it known that l. ll'irmvu ll. .lonxsoyp a eitizen ot' the l'nited P' lates. and a resident ol llilo. in the island of llawaii. 'lerritory oi" llawaii. have invented eertain new and useful lmprovements in liimitype-lvlaehines, of whieh the l'ollowing is a speeilieation.

Illy invention relates to the melting pot of a linotype maehine \vhenee the molten metal is pumped to the mold for forming the slugs through the medium ol arhitrarily arranged matriees. and the main ohjeet thereof is to provide simple though ellieient means for preventing dirt. seum. or dross. on the surl'aee ol' the molten metal from passing to the pump and to the mold. therehy insuring elean slugs and a eonsequent inerease of output of the maehine.

lily invention is fully deserihed in the following speeiliration. ol' whieh the aeeompainyinp drawings form a part. in whieh like eharaeters refer to like parts in earh of the views. and in whieh:

Figure l is a vertieal seetion taken linotype maehine provided with my invention: and Fig.

is a detaehed. perspeetive. view of my attaehment.

la the drawings forming a part of this applieation l have shown a melting pot 3 within whieh is arranged a pump well l. for a pomp plunger 3 operahle by means of the rod 4'. said well heing perforated at 7 to eommunieate with the pot 3. and being in eomnusnieation with the mouth 8 adjaeent the mold, not shown. he means of a passage 9. these parts all being of eonventional form.

My attachment eomprises a eorrugated eylinder 10 open at its ends and of an interier diameter equal to the extrnal diameter of the well l: and over which it is iloreed and upon which it is frietionally held. said cylinder extending upwardly a material distance above the normal level X at the molten liquid. as shown at- X and to a considerable depth below said level shown at X, wherehv no dirt. scum. or dress upon the surface 0 the molten metal can enter the cylinder 10.

llnasnmch as the inward eonvolutions of Specification of Letters Patent.

ll tttt ttltitll ting.

Serial No. 96,330.

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the (jvlinder walls hear against the exterior of the well -l passages are provnled through the outwardwonvolutions hetween the eylinder and the well for the molten metal to pass upwardly from the lower edge of the cylinder 10 to the interior thereof in the natural tendeney of the molten metal to maintain its level iuteriorly and exteriorly ot' the eylinder. and l. may provide perforations 11 adjaeent the lower edge of the eylinder to aid in this result.

ln view of the extension of the eylinder above and helow the level X only elain molten metal ean pass to the interior of the eylinde' aml thenee. by means of the pump, to the mold. and the slugs are therel'ore all free from dirt or dross.

My invention is readily attaehed to the maehine. requires no ehange in the latter. is very ellieient in result. and eomparatively inexpensive. and. while I have shown a preferred eonstruetion thereol'. l do not limit. myself thereto hut may make ehanges thereof as long as I do not depart from the spirit of the invention. nor from the scope of the appended elaims.

llaving fully deserila'al my invention. what, ll claim as new. and desire to secure hy lhetters Patent, is:

1. The eomhination with a melting pot of a linotype maehine having. a pump well therein, of a eylinder held on said pump well and extending ahove and helow the level of the molten metal for preventing the passage of dirt or dross to the pump.

2. The eoml'iination with a melting pot of a linotype machine having a pump well therein, of a eorrugated eylinder in frietional engagement with said well to prevent the passage of dirt or dross to the pump.

3. The eomhination with a melting pot of a lino-type machine having a pump well therein. of a cylinder on said pump well providing passages between the same and said. well for the molten metal and extended ahove and below the level of the metal.

In testimony whereof I have signed my name to this specification.

WILLIAM HENRY JOHNSON. 

